I finally broke down and ordered a set of Thomastik-Infeld Jazz Flats for my semi-hollow 5-string fretless. I've heard so many great things about them here, but I was a little hesitant because of the lower tension that many people mentioned. I've had Labella tapewounds on for ages, and liked them, but needed a change. I was shocked by how tiny the G string looked. They were much more flexible than any set of flats I've used. They sound great! Very rich and full sound with a nice top end. I didn't notice the lower tension much at all. I was especially impressed with that big B string. With the tapewounds I'd been using, I definitely had to modify my attack on the B, and I thought it was a characteristic of my home-built bass. The new B string sounds much better, and I don't have to lay off when I play it. It is much more consistent with the rest of the set. So, I'm tickled pink with them so far. They are worth the extra money.